I’m sure you had that moment that you needed a sync cable for your iPhone but nobody had one handy. You can now be the hero who saves the day. Alway good for a large file sync or an emergency battery top up.
After some internet research I have found a few candidates for this job but two stand out for practicality and durability.
Both are key sized lightning connectors that can be carried around without really adding bulk and wires making them the perfect “on the go” solution.
The main difference between them is that the Kii has the connectors protected and probably can withstand more pocket abuse but costs almost double.
Bluelounge quality is usually high and justifies the higher price but for something like this I’d choose the more simple and economic solution.